Gear.



1. LoNAR.

GEAR.

APPLICATION FILED NOV. 12| 1914.

lpmmm., ummm 29, 1915.

-Josnr tonces.,

da mima, ausi-nummer.

Speciati'dn of Lettera Patent.

Patented .rune ee, isis.

To all 'whom it may concern:

Be it' known that I, JOSEF Londen, subject of the Emperor of "Austria-Hungary, residing at 73 Triesterstra'sse, Vem'a,1X, Austria- Hungary, have -invented -certain new and useful Improvements in Gears, of which the` following lis a specification.

This invention relates to gearing and has special reference to f a vrvariable gear-mg wherein the ratio lof' speed between the driving-'gear and-the driven gear may'vary in accordance with the ratio between power 'andload The-'principal objectof ,the invention is to provide an improvedand simplied generall construction jof devices of'this character.

A second object of the invention is to provide for automatically compensating for the variation i'nl ratio betweenl power and load, wl'iile maintaining a uniformspeed of the' driving gear. l l

With' the above and other objects in view as will hereinafter be apparent the invention consists in general in certain novelfeatures fofconstruction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and specifi-4 cally cla'imedr 'In the accompanying drawings like characteis ofxreference indicate like parts inthe 'several' views, and Figure lis -a section along tliej'line A-B in Fig. 2. Fig.'2 is an elevation showing the gearing partly in section. Fig."3 is a section of apart of the gearing along 'the line C-D in Fig. 2. Fig. 4 is an elevation of a part .of the gearing.

In the disclosed embodiment of the invention. as illustrated in the drawings, thereis shown a iixed axle 1 which is'journaled in a guide iece 2, held between two slide bars 3 and i xed on a disk 5. Thelatter can be displaced along -tne guide piece'2' in a direction atrightangles to the axle 1 and serves as an inner bearing for a disk 6,' to which motion can be imparted by means of a chain, a belt or any suitable means. The disk 6 has a concentrical ringshaped groove li6 at the side opposite to the disk to be driven, said groove servin a 1number of clutches l7. sists of a casing 8, sup guided' in the groove o as aguide for ach clutch con orting a roller 9, .the disk 6. The

lcasing 8 supports also apin 10, by which it p 'l isa disk 15 which tary-gearing is Y of the rope 25 is `fastened to the bear. Mounted concentrically on the axle clutches. To reduce the friction, each pin 13 isprovided with a'roller 16. p

The disk ltransmits its rotary motion to a driven disk17 by a planetary-gearing and is provided to this 'end with internal teeth 1 8, engaging with two planet-wheels 19, supported-on the disk 17 by means of istub axles 20. 'The central gearl wheel21 of the planefreely rotatable around the axle 14 and has longitudinal movement on the axle' for clutc 'engagement with a gear wheel22 as shown in'Fig. 4. The'axial displacement of the wheel`21 is necessary, to enable an adjustment of the ball-bearings of the diskjl, which are formed by the collars o'f the toothed .wheels 21 andl '22.' The toothed wheel-22 engages in' the gearing of theflongitudinal slotoi` theA disk 5, so that this latter is displaced,perpendicularly to the axis of the gearing, when the toothed wheel. rotates. At the-same time the rack 'of theslide-bar 3 causes the turning of the toothed wheel 23, in which it engages and which carries a segment-24 with' a spiral shaped circumference. At the part of this circumference, which is nearest to the axle, one endlof a rope 25l is fastened.v The circumference of the segment is providedl with a groove, in which the rope lies, when the segment is turned to the' right. .The segment 24 is so constructed, that the distances between the axis and the diiierent points of the circumference,- where the rope comes in contact with the segment correspond -with the ratioof gearing necessary to effect the desired result of maintaining roper rela'd tionbetween power and load. T e other end circumference of a rotatable disk l26, rigidly connected with' al spiral cam disk'27. A rope 29, the one end of which is connected with the disk 27 at a point remote from-the cr'f'is ias# tened with the other end to a rod 29", which is under the action of a spring 28 of suitable strength. By the action of the spiral cam disk 24 the moment created by the spring `28 is held constant at different tensions of the spring. The spring 28 is located 'in a casing 31, pivotally mounted on a pin 30. The tension of the spring is transmitted to the toothed wheel 21 by means of the rope 29 the disks`27 and 26, the rope 25, cam 24, and the toothed wheels 23 and 22.

is provided with radial grooves 14:V receiving pins 13 carried by the of the groove 9',

The gear operates as follows: It is` at first supposed, that the disks 6 and 15 are in concentric position. Due to the resistance of the load the disk 15 resists turning with.`

the disk 6. By this action and conse,- quence of the slight friction, always existing b etween the jaws 12 andthe inner' surfaces the wedge 11 advances between the jaws- 412 and presses them against the said inner surfaces. The friction between the jaws and the inner surfaces becomes at last so strong, that the disk 15 is rotated in the samedirection as the disk 6 by means of the clutches 7. The. movement of the disk 15 together with the disk 6 is caused only by the clutches, which find the above mentioned resistance. If now the disk 6 is eccentrically displaced the'clutch or clutchesl farthest ldriving elements lfor the disky 15, the remaining clutches slipping free in the'groove 6'.. When the load varies an automatic displacement of the disk following manner If. themoment of the load, corresponding with the ratio .of gear'- ing at any instant, surpasses the moment of the 'driving force, the .tension of the' spring 28 at that instant is' not sufficient, to maintain the equilibrium against.` the torque exerted by the planet-wheels '19 uponthe centrl toothed wheel 21. .Ift-he disk 6 turns in the direction of the arrows in Fig. 2, the toothed wheels 21 and' 22 turn in the opposite direction and displace the disk 15, 'so'that the degree of eccentricity and consequently the ratio of gearing is lessened. The displacement ofthe disk 5 causes also a rotationl of the toothed wheel 23 and the segment 24 in the same direction. in which the watch-hand advances. By this movement the distance between the axis and the point, where the rope 25 touches the segment 24 increases, so that the moment of the tension of the spring balances the moment of the load. By the diminution of the ratio of gearing a newmoment of the driving force, corresponding with the moment ofthe loading is created. By diminishing on the contrary the load, the -ratio of gearing increasesgradually toa maximum' according to the system.

Having thus described iny invention, what from-the axle form the 6 takes' place in the` I claim as new, and desire to secure by Letters Patent, is

1. Ina variable speed gearing, a driving gear, a drivengear, a change speed element interposed erable upon variation of load on the driven gear for operating the change speed element, saidmeans including a spring and connections therefor and including eccentric cams and connections therefor arranged to control thev operation of the' change speed element in one direction-upon reduction 'of vthe load and to. permit operation thereof upon increase ofl the load.

2. In a variable speed gearing, a. shaft,- a disk rotatably concentric o f said shaft and provided with fa series yof. outwardly extending guides, a. disk movable transversely of the. axis of the shaft, a driving gear journaled onthe last `mentioned disk, Aclutch members slidable in saidl slots and en geable with said .driving gear on said shaft, 'planetary-gearing connecting the'flrst disk and the driven gear and including a central gear journaled on the shaft, and means controlled by the operation of` said central gear for moving the .second disk transversely of the axle.-

3.In avariablespeed gearing, a shaft, a disk rotatably concentric.v of said' shaft and provided with a series'of-outwardly extending guides. ardisk movable transversely 4 ofthe axis of the. Y ft, a drivinlgear Journa'ledA on. the lastme'iitioned fsk, `clutch members slidable in said slots .and engageable with said driving gearwhen the .latter is rotated, a driven gear revolublygmounte'd on said shaft, planetary-gearing connecting the first disk and the drivenl gear and vincluding a central l ar journaled on the shaft, means contro ed by the `opgerationjbf said central gear -`for movin the second transversely of the axle, an

resilient means between said gears, means op when the atter iis rotated, a driven gear revolubly mounted arranged to resistmovementof said-central' testimony whereofl aiix my. vsigna- 

